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Sep 18, 2013
09/13
by
Frank Schuhmacher
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In this paper, we define NC complex spaces as complex spaces together with a structure sheaf of associative algebras in such a way that the abelization of the structure sheaf is the sheaf of holomorphic functions.
Source: http://arxiv.org/abs/math/0606150v1
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49
Sep 21, 2013
09/13
by
Dominic Schuhmacher
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Based on Stein's method, we derive upper bounds for Poisson process approximation in the $L_1$-Wasserstein metric $d_2^{(p)}$, which is based on a slightly adapted $L_p$-Wasserstein metric between point measures. For the case $p=1$, this construction yields the metric $d_2$ introduced in [Barbour and Brown Stochastic Process. Appl. 43 (1992) 9--31], for which Poisson process approximation is well studied in the literature. We demonstrate the usefulness of the extension to general $p$ by showing...
Source: http://arxiv.org/abs/0706.1172v3
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27
Sep 19, 2013
09/13
by
Frank Schuhmacher
texts
eye 27
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We define ''convergence'' for noncommutative power series and construct two topologies on the algebra of power series, convergent with respect to a positive radius. We indicate all finite dimensional continuous representations of this algebra and prove completeness for both topologies.
Source: http://arxiv.org/abs/math/0701048v1
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28
Sep 21, 2013
09/13
by
Frank Schuhmacher
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This is an addendum to the paper ``Deformation of $L_\infty$-Algebras'' of the same author. We explain in which way the deformation theory of $L_\infty$-algebras extends the deformation theory of singularities. We show that the construction of semi-universal deformations of $L_\infty$-algebras gives explicit formal semi-universal deformations of isolated singularities.
Source: http://arxiv.org/abs/math/0407390v1
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Sep 19, 2013
09/13
by
Frank Schuhmacher
texts
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The classical HKR-theorem gives an isomorphism of the n-th Hochschild cohomology of a smooth algebra and the n-th exterior power of its module of K\"ahler differentials. Here we generalize it for simplicial, graded and anticommutative objects in ``good pairs of categories''. We apply this generalization to complex spaces and noetherian schemes and deduce two decomposition theorems for their (relative) Hochschild cohomology (special cases of those were recently shown by Buchweitz-Flenner...
Source: http://arxiv.org/abs/math/0303029v1
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28
Sep 18, 2013
09/13
by
Frank Schuhmacher
texts
eye 28
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We show that three deformation functors (deformations of the product, flat deformations and deformations of the relations) assigned to an associative algebra are naturally isomorphic.
Source: http://arxiv.org/abs/math/0509627v2
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25
Sep 19, 2013
09/13
by
Dominic Schuhmacher
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In [Schuhmacher, Electron. J. Probab. 10 (2005), 165--201] estimates of the Barbour-Brown distance d_2 between the distribution of a thinned point process and the distribution of a Poisson process were derived by combining discretization with a result based on Stein's method. In the present article we concentrate on point processes that have a density with respect to a Poisson process. For such processes we can apply a corresponding result directly without the detour of discretization and thus...
Source: http://arxiv.org/abs/math/0701728v1
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Sep 20, 2013
09/13
by
Frank Schuhmacher
texts
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We prove explit formulas for the decomposition of a differential graded Lie algebra into a minimal and a linear $L_\infty$-algebra. We define a category of metric $L_\infty$-algebras, called Palamodov $L_\infty$ algebras, where the structure maps satisfy a certain convergence condition and deduce a decomposition theorem for differential graded Lie algebras in this category. This theorem serves for instance to prove the convergence of the Kuranishi map assigned to a differential graded Lie...
Source: http://arxiv.org/abs/math/0607764v1
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Sep 20, 2013
09/13
by
Frank Schuhmacher
texts
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In this paper, deformations of $L_\infty$-algebras are defined in such a way that the bases of deformations are $L_\infty$-algebras, as well. A universal and a semiuniversal deformation is constructed for $L_\infty$-algebras, whose cotangent complex admits a splitting. The paper also contains an explicit construction of a minimal $L_\infty$-structure on the homology $H$ of a differential graded Lie algebra $L$ and of an $L_\infty$-quasi-isomorphism between $H$ and $L$.
Source: http://arxiv.org/abs/math/0405485v1
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28
Dec 23, 2019
12/19
by
Schuhmacher, Stephan
texts
eye 28
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116 Seiten : 18 cm
Topics: Zen-Buddhismus, Zen-Buddhismus -- Einführung, Zen-Buddhismus -- Einfuhrung
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37
Sep 20, 2013
09/13
by
Dominic Schuhmacher; Kaspar Stucki
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We obtain upper bounds for the total variation distance between the distributions of two Gibbs point processes in a very general setting. Applications are provided to various well-known processes and settings from spatial statistics and statistical physics, including the comparison of two Lennard-Jones processes, hard core approximation of an area interaction process, and the approximation of lattice processes by a continuous Gibbs process. Our proof of the main results is based on Stein's...
Source: http://arxiv.org/abs/1207.3096v1
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Sep 19, 2013
09/13
by
Dominic Schuhmacher; Aihua Xia
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Most metrics between finite point measures currently used in the literature have the flaw that they do not treat differing total masses in an adequate manner for applications. This paper introduces a new metric $\bar{d}_1$ that combines positional differences of points under a closest match with the relative difference in total mass in a way that fixes this flaw. A comprehensive collection of theoretical results about $\bar{d}_1$ and its induced Wasserstein metric $\bar{d}_2$ for point process...
Source: http://arxiv.org/abs/0708.2777v1
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11
Jun 28, 2018
06/18
by
Fabian Kück; Dominic Schuhmacher
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In the stochastic network model of Britton and Lindholm [Dynamic random networks in dynamic populations. Journal of Statistical Physics, 2010], the number of individuals evolves according to a linear birth and death process with per-capita birth rate $\lambda$ and per-capita death rate $\mu
Topics: Mathematics, Probability
Source: http://arxiv.org/abs/1509.04918
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5.0
Jul 19, 2019
07/19
by
Schuhmacher, W. W
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61 p.; 23 cm. -
Topics: Cybernetics, Language and languages, Mathematical linguistics
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27
Oct 23, 2014
10/14
by
Schuhmacher, Marino; Eick, Dirk
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This article is from Transcription , volume 4 . Abstract The proto-oncogene c-myc encodes a basic helix-loop-helix leucine zipper transcription factor (c-Myc). c-Myc plays a crucial role in cell growth and proliferation. Here, we examined how expression of c-Myc target genes and cell proliferation depend on variation of c-Myc protein levels. We show that proliferation rates, the number of cells in S-phase, and cell size increased in a dose-dependent manner in response to increasing c-Myc...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3977919
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0.0
Jun 29, 2018
06/18
by
Nathan Ross; Dominic Schuhmacher
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We consider the point process of signal strengths emitted from transmitters in a wireless network and observed at a fixed position. In our model, transmitters are placed deterministically or randomly according to a hard core or Poisson point process and signals are subjected to power law path loss and random propagation effects that may be correlated between transmitters. We provide bounds on the distance between the point process of signal strengths and a Poisson process with the same mean...
Topics: Probability, Information Theory, Networking and Internet Architecture, Computing Research...
Source: http://arxiv.org/abs/1606.05825
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3.0
Jun 30, 2018
06/18
by
Carsten Gottschlich; Dominic Schuhmacher
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Finding solutions to the classical transportation problem is of great importance, since this optimization problem arises in many engineering and computer science applications. Especially the Earth Mover's Distance is used in a plethora of applications ranging from content-based image retrieval, shape matching, fingerprint recognition, object tracking and phishing web page detection to computing color differences in linguistics and biology. Our starting point is the well-known revised simplex...
Topics: Computing Research Repository, Computer Vision and Pattern Recognition
Source: http://arxiv.org/abs/1405.7903
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15
Apr 5, 2019
04/19
by
Stephanie Schulz, Curd Schuhmacher
movies
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Ich besitze keine Rechte an diesem Video oder habe die Intention mich an diesem zu bereichern. Meine Intention ist die Weitergabe der Informationen und wichtigen Inhalte, welche ich es aufgrund der hiesigen Zensur für zwingend wichtig erachte, zu sichern auf dieser Plattform.
Topic: Meine Erkenntniß
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54
Sep 22, 2013
09/13
by
Kaspar Stucki; Dominic Schuhmacher
texts
eye 54
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We derive explicit lower and upper bounds for the probability generating functional of a stationary locally stable Gibbs point process, which can be applied to summary statistics like the F function. For pairwise interaction processes we obtain further estimates for the G and K functions, the intensity and higher order correlation functions. The proof of the main result is based on Stein's method for Poisson point process approximation.
Source: http://arxiv.org/abs/1210.4177v2
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24
Oct 24, 2014
10/14
by
Schuhmacher, Christoph; Reim, Daniel; Novotny, Alexander
texts
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This article is from Journal of Gastric Cancer , volume 13 . Abstract Surgery is still considered to be the mainstay for the treatment of localized gastric cancer with negative margins (R0-resection) and an adequate lymph-node-dissection (D2-lymphadenectomy). Unfortunately, most cases of gastric cancer are only diagnosed at an advanced stage due to frequent recurrences after primary resection in curative intent. In order to improve prognosis after curative resection, in the recent past,...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3705135
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36
Sep 20, 2013
09/13
by
Lutz Duembgen; Richard Samworth; Dominic Schuhmacher
texts
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We study the approximation of arbitrary distributions $P$ on $d$-dimensional space by distributions with log-concave density. Approximation means minimizing a Kullback--Leibler-type functional. We show that such an approximation exists if and only if $P$ has finite first moments and is not supported by some hyperplane. Furthermore we show that this approximation depends continuously on $P$ with respect to Mallows distance $D_1(\cdot,\cdot)$. This result implies consistency of the maximum...
Source: http://arxiv.org/abs/1002.3448v4
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26
Sep 21, 2013
09/13
by
Lutz Duembgen; Dominic Schuhmacher; Richard Samworth
texts
eye 26
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This paper introduces and analyzes a stochastic search method for parameter estimation in linear regression models in the spirit of Beran and Millar (1987). The idea is to generate a random finite subset of a parameter space which will automatically contain points which are very close to an unknown true parameter. The motivation for this procedure comes from recent work of Duembgen, Samworth and Schuhmacher (2011) on regression models with log-concave error distributions.
Source: http://arxiv.org/abs/1106.3520v2
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0.0
Jun 30, 2018
06/18
by
Dominic Schuhmacher; Anja Sturm; Henryk Zähle
texts
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We characterize the sets of offspring laws on which the Lotka--Nagaev estimator for the mean of a supercritical Galton--Watson process is qualitatively robust. These are exactly the locally uniformly integrating sets of offspring laws, which may be quite large. If the corresponding global property is assumed instead, we obtain uniform robustness as well. We illustrate both results with a number of concrete examples. As a by-product of the proof we obtain that the Lotka--Nagaev estimator is...
Topics: Mathematics, Statistics Theory, Statistics
Source: http://arxiv.org/abs/1409.4274
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Dec 27, 2012
12/12
by
Fischer-Schreiber, Ingrid; Schuhmacher, Stephan; Woerner, Gert
texts
eye 38
favorite 5
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Translation of: Lexikon der östlichen Weisheitslehren
Topics: Philosophy, Comparative Religion, Non-Classifiable, Religion - World Religions, Religions,...
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1.0
Jun 29, 2018
06/18
by
Jörn Schrieber; Dominic Schuhmacher; Carsten Gottschlich
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eye 1
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The Wasserstein metric or earth mover's distance (EMD) is a useful tool in statistics, machine learning and computer science with many applications to biological or medical imaging, among others. Especially in the light of increasingly complex data, the computation of these distances via optimal transport is often the limiting factor. Inspired by this challenge, a variety of new approaches to optimal transport has been proposed in recent years and along with these new methods comes the need for...
Topics: Optimization and Control, Computer Vision and Pattern Recognition, Computing Research Repository,...
Source: http://arxiv.org/abs/1610.03368
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2.0
Jun 30, 2018
06/18
by
Günther Koliander; Dominic Schuhmacher; Franz Hlawatsch
texts
eye 2
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We study the compression of data in the case where the useful information is contained in a set rather than a vector, i.e., the ordering of the data points is irrelevant and the number of data points is unknown. Our analysis is based on rate-distortion theory and the theory of finite point processes. We introduce fundamental information-theoretic concepts and quantities for point processes and present general lower and upper bounds on the rate-distortion function. To enable a comparison with...
Topics: Probability, Information Theory, Computing Research Repository, Mathematics
Source: http://arxiv.org/abs/1704.05758
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Oct 21, 2014
10/14
by
Tchoupa, Arnaud Kengmo; Schuhmacher, Tamara; Hauck, Christof R
texts
eye 22
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This article is from Cell Communication and Signaling : CCS , volume 12 . Abstract Carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) comprise a group of immunoglobulin-related vertebrate glycoproteins. Several family members, including CEACAM1, CEA, and CEACAM6, are found on epithelial tissues throughout the human body. As they modulate diverse cellular functions, their signaling capacity is in the focus of current research. In this review we will summarize the knowledge about...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057559
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5.0
Jun 30, 2018
06/18
by
David Ginsbourger; Olivier Roustant; Dominic Schuhmacher; Nicolas Durrande; Nicolas Lenz
texts
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The FANOVA (or "Sobol'-Hoeffding") decomposition of multivariate functions has been used for high-dimensional model representation and global sensitivity analysis. When the objective function f has no simple analytic form and is costly to evaluate, a practical limitation is that computing FANOVA terms may be unaffordable due to numerical integration costs. Several approximate approaches relying on random field models have been proposed to alleviate these costs, where f is substituted...
Topics: Probability, Mathematics, Statistics Theory, Statistics
Source: http://arxiv.org/abs/1409.6008
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0.0
Jun 30, 2018
06/18
by
Daniel S. Calovi; Ugo Lopez; Paul Schuhmacher; Hugues Chaté; Clément Sire; Guy Theraulaz
texts
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Fish schools are able to display a rich variety of collective states and behavioural responses when they are confronted to threats. However a school's response to perturbations may be different depending on its collective state. Here we use a previously developed data-driven fish school model to investigate how a single or a small number of perturbing individuals affect the long-term behaviour of a school depending on its collective state. These perturbing fish are characterised by a set of...
Topics: Biological Physics, Physics, Quantitative Methods, Quantitative Biology
Source: http://arxiv.org/abs/1409.6430
Royal College of Surgeons of England
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63
Sep 29, 2015
09/15
by
Schuhmacher, Dr; Bryant, Thomas, 1828-1914, former owner; Royal College of Surgeons of England
texts
eye 63
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Original title: Om laparotomi eller enterotomi i tilfälde af ileus
Topic: Ileus, surgery
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48
Sep 22, 2013
09/13
by
A. A. Fedyanin; T. V. Dolgova; O. A. Aktsipetrov; D. Schuhmacher; G. Marowsky
texts
eye 48
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The second-harmonic interferometric spectroscopy (SHIS) which combines both amplitude (intensity) and phase spectra of the second-harmonic (SH) radiation is proposed as a new spectroscopic technique being sensitive to the type of critical points (CP's) of combined density of states at semiconductor surfaces. The increased sensitivity of SHIS technique is demonstrated for the buried Si(111)-SiO$_2$ interface for SH photon energies from 3.6 eV to 5 eV and allows to separate the resonant...
Source: http://arxiv.org/abs/physics/0004018v1
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70
Dec 1, 2010
12/10
by
Häublein, Gernot; Jenkins, Recs; Schuhmacher, K.E; Vonk-Schuld, A.E; Vries, Julia de
texts
eye 70
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comment 0
0
0.0
Jun 29, 2018
06/18
by
Luke C. G. Govia; Bruno G. Taketani; Peter K. Schuhmacher; Frank K. Wilhelm
texts
eye 0
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The study of quantum walks has been shown to have a wide range of applications in areas such as artificial intelligence, the study of biological processes, and quantum transport. The quantum stochastic walk, which allows for incoherent movement of the walker, and therefore, directionality, is a generalization on the fully coherent quantum walk. While a quantum stochastic walk can always be described in Lindblad formalism, this does not mean that it can be microscopically derived in the standard...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1606.08096
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2.0
Jun 30, 2018
06/18
by
S. Karmakar; M. Schaber; A. -L. Schuhmacher; M. Scheel; M. DiMichiel; M. Brinkmann; R. Seemann; L. Kovalcinova; L. Kondic
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Energy dissipation in sheared dry and wet granulates is explored experimentally and computationally as a function of confining pressure $P_{\rm cf}$. For vanishing confining pressure, $P_{\rm cf} \rightarrow 0$, the energy dissipation fades in the case of dry granulates. In the case of wet granulates, a finite energy dissipation for $P_{\rm cf} \rightarrow 0$ is observed and explained quantitatively by a combination of two effects related to capillary forces: frictional resistance of the...
Topics: Physics, Condensed Matter, Soft Condensed Matter, Other Condensed Matter, Computational Physics
Source: http://arxiv.org/abs/1703.08523
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44
Oct 28, 2014
10/14
by
Heger, Ulrike; Voss, Sabine; Knebel, Phillip; Doerr-Harim, Colette; Neudecker, Jens; Schuhmacher, Christoph; Faist, Eugen; Diener, Markus K; Kieser, Meinhard; Seiler, Christoph M; Buchler, Markus W
texts
eye 44
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This article is from Trials , volume 12 . Abstract Background: Wound infection affects a considerable portion of patients after abdominal operations, increasing health care costs and postoperative morbidity and affecting quality of life. Antibacterial coating has been suggested as an effective measure to decrease postoperative wound infections after laparotomies. The INLINE metaanalysis has recently shown the superiority of a slowly absorbable continuous suture for abdominal closure; with PDS...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3250941
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Oct 27, 2014
10/14
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Schuhmacher, Swenja; Oelze, Matthias; Bollmann, Franziska; Kleinert, Hartmut; Otto, Christian; Heeren, Tjebo; Steven, Sebastian; Hausding, Michael; Knorr, Maike; Pautz, Andrea; Reifenberg, Kurt; Schulz, Eberhard; Gori, Tommaso; Wenzel, Philip; Munzel, Thomas; Daiber, Andreas
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This article is from Diabetes , volume 60 . Abstract OBJECTIVE: Diabetes is associated with vascular oxidative stress, activation of NADPH oxidase, and uncoupling of nitric oxide (NO) synthase (endothelial NO synthase [eNOS]). Pentaerithrityl tetranitrate (PETN) is an organic nitrate with potent antioxidant properties via induction of heme oxygenase-1 (HO-1). We tested whether treatment with PETN improves vascular dysfunction in the setting of experimental diabetes. RESEARCH DESIGN AND METHODS:...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3178293
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90
Jul 20, 2013
07/13
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The XENON100 Collaboration; E. Aprile; M. Alfonsi; K. Arisaka; F. Arneodo; C. Balan; L. Baudis; B. Bauermeister; A. Behrens; P. Beltrame; K. Bokeloh; A. Brown; E. Brown; S. Bruenner; G. Bruno; R. Budnik; J. M. R. Cardoso; W. -T. Chen; B. Choi; A. P. Colijn; H. Contreras; J. P. Cussonneau; M. P. Decowski; E. Duchovni; S. Fattori; A. D. Ferella; W. Fulgione; F. Gao; M. Garbini; C. Geis; C. Ghag; K. -L. Giboni; L. W. Goetzke; C. Grignon; E. Gross; W. Hampel; R. Itay; F. Kaether; G. Kessler; A. Kish; J. Lamblin; H. Landsman; R. F. Lang; M. Le Calloch; C. Levy; K. E. Lim; Q. Lin; S. Lindemann; M. Lindner; J. A. M. Lopes; K. Lung; T. Marrodan Undagoitia; F. V. Massoli; A. J. Melgarejo Fernandez; Y. Meng; M. Messina; A. Molinario; K. Ni; U. Oberlack; S. E. A. Orrigo; E. Pantic; R. Persiani; G. Plante; N. Priel; A. Rizzo; S. Rosendahl; J. M. F. dos Santos; G. Sartorelli; J. Schreiner; M. Schumann; L. Scotto Lavina; P. R. Scovell; M. Selvi; P. Shagin; H. Simgen; A. Teymourian; D. Thers; O. Vitells; H. Wang; M. Weber; C. Weinheimer; H. Schuhmacher; B. Wiegel
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Results from the nuclear recoil calibration of the XENON100 dark matter detector installed underground at the Laboratori Nazionali del Gran Sasso (LNGS), Italy are presented. Data from measurements with an external 241AmBe neutron source are compared with a detailed Monte Carlo simulation which is used to extract the energy dependent charge-yield Qy and relative scintillation efficiency Leff. A very good level of absolute spectral matching is achieved in both observable signal channels -...
Source: http://arxiv.org/abs/1304.1427v2
